EP 1077525 A2 20010221 - Phase synchronization of redundant motor windings
Title (en)
Phase synchronization of redundant motor windings
Title (de)
Phasensynchronisation von redundanten Motorwindungen
Title (fr)
Synchronisation de phase des enroulements redondants de moteur
Publication
Application
Priority
US 37582199 A 19990816
Abstract (en)
A method and system (10) for simultaneous operation of primary (14A-14D) and redundant (16A-16D) motor windings in a redundant stepper motor (12). The redundant motor system (10) has a control circuit (11) including a phase synchronizer (36) for establishing a relationship between predetermined primary and redundant motor windings (14A-14D, 16A-16D) such that the power consumption is increased and the motor torque is affected. In one embodiment of the present invention the predetermined motor windings (14A-14D, 16A-16D) are operated in phase thereby doubling the power consumption and increasing the torque. In another embodiment, the predetermined motor windings (14A-14D, 16A-16D) are operated in phase quadrature thereby doubling the power consumption and increasing the torque by less than 50%. In yet another embodiment, the predetermined motor windings (14A-14D, 16A-16D) are operated out of phase with each other thereby doubling power consumption and producing zero torque. <IMAGE>
IPC 1-7
IPC 8 full level
H02P 8/14 (2006.01)
CPC (source: EP US)
H02P 8/14 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
US 6118246 A 20000912; DE 60034189 D1 20070516; DE 60034189 T2 20071220; EP 1077525 A2 20010221; EP 1077525 A3 20040121; EP 1077525 B1 20070404
DOCDB simple family (application)
US 37582199 A 19990816; DE 60034189 T 20000726; EP 00116056 A 20000726